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OpenAI introduces Daybreak cyber platform, takes on Anthropic Mythos

OpenAI has unveiled Daybreak, its answer to Anthropic’s Claude Mythos, amid a growing market for frontier AI-powered cyber defense platforms. The initiative combines OpenAI’s large language models, Codex’s agentic capabilities, and integrations with the broader enterprise security ecosystem. The company said Daybreak is focused on accelerating cyber defense operations and enabling organizations to secure software…

OpenAI introduces Daybreak cyber platform, takes on Anthropic Mythos

OpenAI has unveiled Daybreak, its answer to Anthropic’s Claude Mythos, amid a growing market for frontier AI-powered cyber defense platforms. The initiative combines OpenAI’s large language models, Codex’s agentic capabilities, and integrations with the broader enterprise security ecosystem. The company said Daybreak is focused on accelerating cyber defense operations and enabling organizations to secure software…

Data Breaches, AI Expansion, and Cloud Security Define This Week’s Cyber Landscape in April 2026

Major Threats & Vulnerabilities Vulnerability Scoring and Exploitation Trends The NIST Adjusts Scoring Amid CVE Spike report highlights a 260%+ increase in CVE submissions since 2020. To manage the surge, NIST will prioritize high-impact vulnerabilities, potentially leaving many without full scoring data. Security teams must adapt to inconsistent vulnerability data and prepare for potential blind…